Improved coupling for hollow shafts



@stent (tintin/1%.

` tnited tatt y PETER W. REINSHAGEN, OF CINCINNATI, OHIO, ASSIGNOR TO HIMSEL AND JOHN H. BUOKMAN, OF SAME PLACE.

`IMPIRO'VED CPLING- FOR HOLLOW SHAITS.

The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern following to be a sufficiently full, clear, and exact de scription thereof, to enable one skilled in the art to which my invention appertains, to make and use it, reference heilig had to the accompanying drawings, making part of lthis specification.

My invention is designed and adapted for hollow shafting only, and consists of cert-ain devices which serve to connect the shafts to be coupled firmly together, and serve to obviate the necessity of chasingscrews on the ends of the shafts, and also prevent the indentation or collapsing of the hollow shafts by the act ot' securing the coupling.

In the accompanying' drawings- Figure 1 is an axial sect-ion of a hollow shaft-coupling, embodying my invention.

'Figure 2 exhibits detached perspective views of those parts not clearly shown in tig. 1.

VA is an interior bush, which tits snugly into the ends of the hollow shafts B B'.

'Ihe bush A is formed with two or more wings, a, and the ends of the shafts B B are provided with slots b, to tit the said wings.

The bush A serves to prevent the indentation or collapsing of the shafts when the outer coupling (hereafter explained) is tightened, and the wings a, of the bush, in connection with the slots b, serve to connect the shafts B B' together, `so as to prevent displacement by twisting or turning.

To prevent longitudinal displacement, or the drawing of the shafts, one from the other, and to force the shafts B B tightly on t-o the bush A, I provide an exterior coupling, composed preferably ot' segments C, nuts DD', and sleeve E.

The segments C are of a double conical form, as shown, and are fitted over the shafts B B', being out away at C to fit between the wings a.

The fitting of the segments G over the wings a, by means of notches c, serves to locate the exterior coupling in the propel' position with relation to the junction of the shafts B B. rIhis feature, however, can be dispensed with it' necessary, in the use of an exterior coupling different from the one described, the wings being then made flush with the exterior ot' the shafts B B.

The couically-bored nuts'D D fit over the shafts B B' and segments C, and are threaded, to fit the exterior sleeve E.

It will be seen that the act of screwing the nuts D D' together, in the hush 1L", serves to crowd the segments G tightly on to'the shafts B B', and force the latter tohug the interior bush A, and thus conneet the shafts tirmly together.

It' the shaftjournals are oiled from the inside, India-rubber rings F F' lnay be inserted, to prevent the escape of oil through the coupling.

I claim'herein as new, andot my inventionl. The winged bush A a a, in the described conneet-ion with the slotted or notched shaft-s B B', arranged and operating substantially in the manner and for the'purpose set forth. v

2. In combination with the elements of the preceding clause, the. conical notched segments C c, nuts D D', and sleeve E, constructed and operating substantially in the manner and for the purpose cx` plained.

ln testimony of which invention, Iherennto set my hand.

I. W. REINSHAGEJ. fitnesses FRANK MILLWARD, F. B. LORD. 

